166,25 = 166 ¼ = [tex]\frac{665}{4}[/tex]
Pozdrawiam :)
[tex]166.25 = 166 \frac{1}{4} = \frac{(166 \times 4 )+ 1}{4} = \frac{664 + 1}{4} = \boxed{\frac{665}{4} }[/tex]